Cold sores around lips
Cold sores are recurring fluid-filled blisters, usually on or around the lips, caused by herpes simplex virus infection.
What are recurring cold sores around the lips?
Cold sores are recurring fluid-filled blisters, usually on or around the lips, caused by herpes simplex virus infection.
How does a cold sore develop around the lips?
A cold sore often begins with tingling, burning, or itching, followed by grouped blisters that break, crust, and heal. The virus remains in nerve tissue and can reactivate at the lip border.
What can trigger an outbreak around the lips?
Triggers can include illness, stress, sun exposure, hormonal changes, or local trauma, though an episode may occur without an obvious trigger. Not every lip lesion is a cold sore; contact dermatitis, a bacterial lesion, and other mouth conditions can look similar.
How can you reduce spreading a cold sore to others?
Keep the area clean, avoid picking the crust, wash hands after touching it, and avoid kissing or sharing cups, lip products, towels, or oral contact while a lesion is present. A clinician can discuss antiviral treatment, which is most useful when started early for suitable patients.
When should severe or frequent cold sores be assessed?
Seek assessment if the lesion is severe, frequent, spreading toward the eye, unusually persistent, or accompanied by fever or immune-system problems. Newborn exposure and eye pain require urgent medical advice.
Frequently asked questions
Typical site
The lip border or nearby facial skin.
Early symptom
Tingling or burning before blistering.
Transmission
Direct contact with active lesion fluid can spread infection.
Who wrote this page
This library is published by Dental Nation, a licensed dental group practising in the United Arab Emirates. Pages are written and overseen by the same clinical team that treats patients in our clinics, and are held to a fixed editorial standard for safety and accuracy.
This page is patient education, not medical advice, and cannot replace an examination. Anything urgent — facial swelling, trauma, uncontrolled bleeding or severe pain — needs a dentist or emergency care now.